Joseph Green’s 1976 Star Probe is a stand-alone science fiction novel.
In the far-off year of Two! Thousand! Eleven! an alien starship moving at 8,000 kilometers/second1 is detected at the edge of the Solar System. Its path will take it past Earth, by which time the actively decelerating probe will have slowed to a comparatively sedate 400 kilometers per second. Even that speed is far above Solar escape velocity at 1 Astronomical Unit. If nothing is done, the visitor will continue on its way out of the Solar System.
The only impediments standing between humanity2 and interception of the visiting Probe are technological and political.